sql中把一列数据相加（SQL实现相邻两行数据的加减乘除操作）

时间：2022-04-02 01:04:32类别：数据库

sql中把一列数据相加

SQL实现相邻两行数据的加减乘除操作

sql实现表里数据按一定顺序排序后，按某几个字段分组后相邻两行数据实现加减乘除运算。

思路：

1：先把表数据分组排序后打上序号标签

2：根据需求把标签字段加/减一

上代码：

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12 select distinct a.phone,from_unixtime(cast(floor(a.ts/1000) as bigint),'yyyymmdd hh:mm:ss'),cha

from table a

join

(

select a.phone,a.ts,abs(a.ts-b.ts)/1000 cha

from (select phone,ts,row_number() over(partition by phone order by ts ) rank from table) a

left join

( select phone,ts,rank-1 as rank from (select phone,ts,row_number() over(partition by phone order by ts ) rank from table) a ) b

on a.phone = b.phone and a.rank = b.rank

) b

on a.phone = b.phone and a.ts = b.ts

where a.phone is not null and a.phone<>'';